merge: refuse to create too cool a merge by default
While it makes sense to allow merging unrelated histories of two
projects that started independently into one, in the way "gitk" was
merged to "git" itself aka "the coolest merge ever", such a merge is
still an unusual event. Worse, if somebody creates an independent
history by starting from a tarball of an established project and
sends a pull request to the original project, "git merge" however
happily creates such a merge without any sign of something unusual
is happening.
Teach "git merge" to refuse to create such a merge by default,
unless the user passes a new "--allow-unrelated-histories" option to
tell it that the user is aware that two unrelated projects are
merged.
Because such a "two project merge" is a rare event, a configuration
option to always allow such a merge is not added.
We could add the same option to "git pull" and have it passed
through to underlying "git merge". I do not have a fundamental
opposition against such a feature, but this commit does not do so
and instead leaves it as low-hanging fruit for others, because such
a "two project merge" would be done after fetching the other project
into some location in the working tree of an existing project and
making sure how well they fit together, it is sufficient to allow a
local merge without such an option pass-through from "git pull" to
"git merge". Many tests that are updated by this patch does the
pass-through manually by turning:
merge: fix NULL pointer dereference when merging nothing into void
When we are on an unborn branch and merging only one foreign parent,
we allow "git merge" to fast-forward to that foreign parent commit.
This codepath incorrectly attempted to dereference the list of
parents that the merge is going to record even when the list is
empty. It must refuse to operate instead when there is no parent.
All other codepaths make sure the list is not empty before they
dereference it, and are safe.
Reported-by: Jose Ivan B. Vilarouca Filho Signed-off-by: Junio C Hamano <gitster@pobox.com>
Noticed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "git -c var=value" option stuffs the config value into
$GIT_CONFIG_PARAMETERS, so that sub-processes can see it.
When the config is later read via git_config() or similar,
we parse it back out of that variable. The parsing end is a
little bit picky; it assumes that each entry was generated
with sq_quote_buf(), and that there is no extraneous
whitespace.
On the generating end, we are careful to append to an
existing $GIT_CONFIG_PARAMETERS variable if it exists.
However, our test for "should we add a space separator" is
too liberal: it will add one even if the environment
variable exists but is empty. As a result, you might end up
with:
GIT_CONFIG_PARAMETERS=" 'core.foo=bar'"
which the parser will choke on.
This was hard to trigger in older versions of git, since we
only set the variable when we had something to put into it
(though you could certainly trigger it manually). But since 14111fc (git: submodule honor -c credential.* from command
line, 2016-02-29), the submodule code will unconditionally
put the $GIT_CONFIG_PARAMETERS variable into the environment
of any operation in the submodule, whether it is empty or
not. So any of those operations which themselves use "git
-c" will generate the unparseable value and fail.
We can easily fix it by catching this case on the generating
side. While we're adding a test, let's also check that
multiple layers of "git -c" work, which was previously not
tested at all.
Reported-by: Shin Fan <shinfan@google.com> Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Tested-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
mingw: skip some tests in t9115 due to file name issues
These two tests wanted to write file names which are incompatible with
Windows' file naming rules (even if they pass using Cygwin due to
Cygwin's magic path mangling).
While at it, skip the same tests also on MacOSX/HFS, as pointed out by
Torsten Bögershausen.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Torsten Bögershausen <tboegi@web.de> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
On Windows, we have that funny situation where the test script can refer
to POSIX paths because it runs in a shell that uses a POSIX emulation
layer ("MSYS2 runtime"). Yet, git.exe does *not* understand POSIX paths
at all but only pure Windows paths.
So let's just convert the POSIX paths to Windows paths before passing
them on to Git, using `pwd` (which is already modified on Windows to
output Windows paths).
While fixing the new tests on Windows, we also have to exclude the tests
that want to write a file with a name that is illegal on Windows
(unfortunately, there is more than one test trying to make use of that
file).
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
t1300-repo-config: make it resilient to being run via 'sh -x'
One way to diagnose broken regression tests is to run the test
script using 'sh -x t... -i -v' to find out which call actually
demonstrates the symptom.
Hence it is pretty counterproductive if the test script behaves
differently when being run via 'sh -x', in particular when using
test_cmp or test_i18ncmp on redirected stderr. A more recent way
"sh tXXXX -i -v -x" has the same issue.
So let's use test_i18ngrep (as suggested by Jonathan Nieder) instead of
test_cmp/test_i18ncmp to verify that stderr looks as expected.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
submodule: fix regression for deinit without submodules
Per Cederqvist wrote:
> It used to be possible to run
>
> git submodule deinit -f .
>
> to remove any submodules, no matter how many submodules you had. That
> is no longer possible in projects that don't have any submodules at
> all. The command will fail with:
>
> error: pathspec '.' did not match any file(s) known to git.
This regression was introduced in 74703a1e4dfc (submodule: rewrite
`module_list` shell function in C, 2015-09-02), as we changed the
order of checking in new module listing to first check whether it is
a gitlin before feeding it to match_pathspec(). It used to be that
a pathspec that does not match any path were diagnosed as an error,
but the new code complains for a pathspec that does not match any
submodule path.
Arguably the new behaviour may give us a better diagnosis, but that
is inconsistent with the suggestion "deinit" gives, and also this
was an unintended accident. The new behaviour hopefully can be
redesigned and implemented better in future releases, but for now,
switch these two checks to restore the same behavior as before. In
an empty repository, giving the pathspec '.' will still get the same
"did not match" error, but that is the same bug we had before 1.7.0.
Reported-by: Per Cederqvist <cederp@opera.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
tag: add the option to force signing of annotated tags
The `tag.forcesignannotated` configuration variable makes "git tag"
that would implicitly create an annotated tag to instead create a
signed tag. For example
$ git tag -m "This is a message" tag-with-message
$ git tag -F message-file tag-with-message
would create a signed tag if the configuration variable is in
effect. To override this from the command line, the user can
explicitly ask for an annotated tag, like so:
$ git tag -a -m "This is a message" tag-with-message
$ git tag -a -F message-file tag-with-message
Creation of a light-weight tag, i.e.
$ git tag lightweight
is not affected.
Signed-off-by: Laurent Arnoud <laurent@spkdev.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
apply: remove unused call to free() in gitdiff_{old,new}name()
These two functions keep a copy of filename it was given, let
gitdiff_verify_name() to rewrite it to a new filename and then free
the original if they receive a newly minted filename.
However
(1) when the original name is NULL, gitdiff_verify_name() returns
either NULL or a newly minted value. Either case, we do not
have to worry about calling free() on the original NULL.
(2) when the original name is not NULL, gitdiff_verify_name()
either returns that as-is, or calls die() when it finds
inconsistency in the patch. When the function returns, we know
that "if ()" statement always is false.
When concluding a conflicted "git merge --squash", the command
failed to read SQUASH_MSG that was prepared by "git merge", and
showed only the "# Conflicts:" list of conflicted paths.
Place the contents from SQUASH_MSG at the beginning, just like we
show the commit log skeleton first when concluding a normal merge,
and then show the "# Conflicts:" list, to help the user write the
log message for the resulting commit.
Test by Junio C Hamano <gitster@pobox.com>.
Signed-off-by: Sven Strickroth <sven@cs-ware.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If rebase.autoStash configuration variable is set, there is no way to
override it for "git pull --rebase" from the command line.
Teach "git pull --rebase" the --[no-]autostash command line flag which
overrides the current value of rebase.autoStash, if set. As "git rebase"
understands the --[no-]autostash option, it's just a matter of passing
the option to underlying "git rebase" when "git pull --rebase" is called.
Helped-by: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> Helped-by: Junio C Hamano <gitster@pobox.com> Helped-by: Paul Tan <pyokagan@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-pull makes a seperate call to git_config_get_bool() to read the value
of "rebase.autostash". This can be reduced as a call to git_config() is
already there in the code.
Introduce a callback function git_pull_config() to read "rebase.autostash"
along with other variables.
Helped-by: Junio C Hamano <gitster@pobox.com> Helped-by: Paul Tan <pyokagan@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now that st_add4() has been patched to work around the gcc 4.2.x
compiler crash, revert the sledge-hammer approach of forcing Mac OS X
10.6 to unconditionally use 'clang' rather than the default compiler
(gcc).
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-compat-util: st_add4: work around gcc 4.2.x compiler crash
Although changes by 5b442c4 (tree-diff: catch integer overflow in
combine_diff_path allocation, 2016-02-19) are perfectly valid, they
unfortunately trigger an internal compiler error in gcc 4.2.x:
combine-diff.c: In function 'diff_tree_combined':
combine-diff.c:1391: internal compiler error: Segmentation fault: 11
Experimentation reveals that changing st_add4()'s argument evaluation
order is sufficient to sidestep this problem.
Although st_add3() does not trigger the compiler bug, for style
consistency, change its argument evaluation order to match.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'master' of git://ozlabs.org/~paulus/gitk
* 'master' of git://ozlabs.org/~paulus/gitk:
gitk: Follow themed bgcolor in help dialogs
gitk: fr.po: Sync translations with git
gitk: Update French translation (311t)
gitk: Update German translation
gitk: Update Bulgarian translation (311t)
We set GIT_CONFIG_NOSYSTEM in our test scripts so that we do
not accidentally read /etc/gitconfig and have it influence
the outcome of the tests. But when running smart-http tests,
Apache will clean the environment, including this variable,
and the "server" side of our http operations will read it.
You can see this breakage by doing something like:
make
./git config --system http.getanyfile false
make test
which will cause t5561 to fail when it tests the
fallback-to-dumb operation.
We can fix this by instructing Apache to pass through the
variable. Unlike with other variables (e.g., 89c57ab3's
GIT_TRACE), we don't need to set a dummy value to prevent
warnings from Apache. test-lib.sh already makes sure that
GIT_CONFIG_NOSYSTEM is set and exported.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When this code was originally written, there wasn't much
thought given to the timing between a client asking for
"exit", the daemon signaling that the action is done (with
EOF), and the actual cleanup of the socket.
However, we need to care about this so that our test scripts
do not end up racy (e.g., by asking for an exit and checking
that the socket was cleaned up). The code that is already
there happens to behave very reasonably; let's add a comment
to make it clear that any changes should retain the same
behavior.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
send-email: ignore trailing whitespace in mailrc alias file
The regex for parsing mailrc considers everything after the
second whitespace to be the email address, up to the end of
the line. We have to include whitespace there, because you
may have multiple space-separated addresses, each with their
own internal quoting.
But if there is trailing whitespace, we include that, too.
This confuses quotewords() when we try to split the
individual addresses, and we end up storing "undef" in our
alias list. Later parts of the code then access that,
generating perl warnings.
Let's tweak our regex to throw away any trailing whitespace
on each line.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the later steps of preparing a patch series I do not want to
edit or reorder the patches any more, but just make sure the
test suite passes after each patch and also to fix breakage
right there if some of the steps fail. I could run
EDITOR=true git rebase -i <anchor> -x "make test"
but it would be simpler if it can be spelled like so:
git rebase <anchor> -x "make test"
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint-2.5:
Git 2.5.5
Git 2.4.11
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
* maint-2.4:
Git 2.4.11
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
Merge branch 'jk/path-name-safety-2.4' into maint-2.4
Bugfix patches were backported from the 'master' front to plug heap
corruption holes, to catch integer overflow in the computation of
pathname lengths, and to get rid of the name_path API. Both of
these would have resulted in writing over an under-allocated buffer
when formulating pathnames while tree traversal.
* jk/path-name-safety-2.4:
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
Translate 22 new messages came from git.pot update in f1522b2
(l10n: git.pot: v2.8.0 round 2 (21 new, 1 removed)) and a5a4168
(l10n: git.pot: Add one new message for Git 2.8.0).
* maint:
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
Recent versions of GNU grep is pickier than before to decide if a
file is "binary" and refuse to give line-oriented hits when we
expect it to, unless explicitly told with "-a" option. As our
scripted Porcelains use sane_grep wrapper for line-oriented data,
even when the line may contain non-ASCII payload we took from
end-user data, use "grep -a" to implement sane_grep wrapper when
using an implementation of "grep" that takes the "-a" option.
* jc/sane-grep:
rebase-i: clarify "is this commit relevant?" test
sane_grep: pass "-a" if grep accepts it
The two alternative ways to spell "ssh://" transport have been
deprecated for a long time. The last mention of them has finally
removed from the documentation.
* cn/deprecate-ssh-git-url:
Disown ssh+git and git+ssh
git-svn: fix URL canonicalization during init w/ SVN 1.7+
URL canonicalization when full URLs are passed became broken
when using SVN::_Core::svn_dirent_canonicalize under SVN 1.7.
Ensure we canonicalize paths and URLs with appropriate functions
for each type from now on as the path/URL-agnostic
SVN::_Core::svn_path_canonicalize function is deprecated in SVN.
Reported-by: Adam Dinwoodie <adam@dinwoodie.org>
http://mid.gmane.org/20160315162344.GM29016@dinwoodie.org Signed-off-by: Eric Wong <normalperson@yhbt.net>
* jk/path-name-safety-2.7:
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
t9117: test specifying full url to git svn init -T
According to the documentation, full URLs can be specified in the `-T`
argument to `git svn init`. However, the canonicalization of such
arguments squashes together consecutive "/"s, which unsurprisingly
breaks http://, svn://, etc URLs. Add a failing test case to provide
evidence of that.
On systems where Subversion provides svn_path_canonicalize but not
svn_dirent_canonicalize (Subversion 1.6 and earlier?), this test passes,
as svn_path_canonicalize doesn't mangle the consecutive "/"s.
[ew: fixed whitespace]
Signed-off-by: Adam Dinwoodie <adam@dinwoodie.org> Signed-off-by: Eric Wong <normalperson@yhbt.net>
Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7
* jk/path-name-safety-2.6:
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
Merge branch 'jk/path-name-safety-2.5' into jk/path-name-safety-2.6
* jk/path-name-safety-2.5:
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
Merge branch 'jk/path-name-safety-2.4' into jk/path-name-safety-2.5
* jk/path-name-safety-2.4:
list-objects: pass full pathname to callbacks
list-objects: drop name_path entirely
list-objects: convert name_path to a strbuf
show_object_with_name: simplify by using path_name()
http-push: stop using name_path
tree-diff: catch integer overflow in combine_diff_path allocation
add helpers for detecting size_t overflow
When we find a blob at "a/b/c", we currently pass this to
our show_object_fn callbacks as two components: "a/b/" and
"c". Callbacks which want the full value then call
path_name(), which concatenates the two. But this is an
inefficient interface; the path is a strbuf, and we could
simply append "c" to it temporarily, then roll back the
length, without creating a new copy.
So we could improve this by teaching the callsites of
path_name() this trick (and there are only 3). But we can
also notice that no callback actually cares about the
broken-down representation, and simply pass each callback
the full path "a/b/c" as a string. The callback code becomes
even simpler, then, as we do not have to worry about freeing
an allocated buffer, nor rolling back our modification to
the strbuf.
This is theoretically less efficient, as some callbacks
would not bother to format the final path component. But in
practice this is not measurable. Since we use the same
strbuf over and over, our work to grow it is amortized, and
we really only pay to memcpy a few bytes.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In the previous commit, we left name_path as a thin wrapper
around a strbuf. This patch drops it entirely. As a result,
every show_object_fn callback needs to be adjusted. However,
none of their code needs to be changed at all, because the
only use was to pass it to path_name(), which now handles
the bare strbuf.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "struct name_path" data is examined in only two places:
we generate it in process_tree(), and we convert it to a
single string in path_name(). Everyone else just passes it
through to those functions.
We can further note that process_tree() already keeps a
single strbuf with the leading tree path, for use with
tree_entry_interesting().
Instead of building a separate name_path linked list, let's
just use the one we already build in "base". This reduces
the amount of code (especially tricky code in path_name()
which did not check for integer overflows caused by deep
or large pathnames).
It is also more efficient in some instances. Any time we
were using tree_entry_interesting, we were building up the
strbuf anyway, so this is an immediate and obvious win
there. In cases where we were not, we trade off storing
"pathname/" in a strbuf on the heap for each level of the
path, instead of two pointers and an int on the stack (with
one pointer into the tree object). On a 64-bit system, the
latter is 20 bytes; so if path components are less than that
on average, this has lower peak memory usage. In practice
it probably doesn't matter either way; we are already
holding in memory all of the tree objects leading up to each
pathname, and for normal-depth pathnames, we are only
talking about hundreds of bytes.
This patch leaves "struct name_path" as a thin wrapper
around the strbuf, to avoid disrupting callbacks. We should
fix them, but leaving it out makes this diff easier to view.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
show_object_with_name: simplify by using path_name()
When "git rev-list" shows an object with its associated path
name, it does so by walking the name_path linked list and
printing each component (stopping at any embedded NULs or
newlines).
We'd like to eventually get rid of name_path entirely in
favor of a single buffer, and dropping this custom printing
code is part of that. As a first step, let's use path_name()
to format the list into a single buffer, and print that.
This is strictly less efficient than the original, but it's
a temporary step in the refactoring; our end game will be to
get the fully formatted name in the first place.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Performing computations on size_t variables that we feed to
xmalloc and friends can be dangerous, as an integer overflow
can cause us to allocate a much smaller chunk than we
realized.
We already have unsigned_add_overflows(), but let's add
unsigned_mult_overflows() to that. Furthermore, rather than
have each site manually check and die on overflow, we can
provide some helpers that will:
- promote the arguments to size_t, so that we know we are
doing our computation in the same size of integer that
will ultimately be fed to xmalloc
- check and die on overflow
- return the result so that computations can be done in
the parameter list of xmalloc.
These functions are a lot uglier to use than normal
arithmetic operators (you have to do "st_add(foo, bar)"
instead of "foo + bar"). To at least limit the damage, we
also provide multi-valued versions. So rather than:
st_add(st_add(a, b), st_add(c, d));
you can write:
st_add4(a, b, c, d);
This isn't nearly as elegant as a varargs function, but it's
a lot harder to get it wrong. You don't have to remember to
add a sentinel value at the end, and the compiler will
complain if you get the number of arguments wrong. This
patch adds only the numbered variants required to convert
the current code base; we can easily add more later if
needed.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The graph traversal code here passes along a name_path to
build up the pathname at which we find each blob. But we
never actually do anything with the resulting names, making
it a waste of code and memory.
This usage came in aa1dbc9 (Update http-push functionality,
2006-03-07), and originally the result was passed to
"add_object" (which stored it, but didn't really use it,
either). But we stopped using that function in 1f1e895 (Add
"named object array" concept, 2006-06-19) in favor of
storing just the objects themselves.
Moreover, the generation of the name in process_tree() is
buggy. It sticks "name" onto the end of the name_path linked
list, and then passes it down again as it recurses (instead
of "entry.path"). So it's a good thing this was unused, as
the resulting path for "a/b/c/d" would end up as "a/a/a/a".
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
tree-diff: catch integer overflow in combine_diff_path allocation
A combine_diff_path struct has two "flex" members allocated
alongside the struct: a string to hold the pathname, and an
array of parent pointers. We use an "int" to compute this,
meaning we may easily overflow it if the pathname is
extremely long.
We can fix this by using size_t, and checking for overflow
with the st_add helper.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When trying to find a good spot for testing clone with submodules, I
got confused where to add a new test file. There are both tests in t560*
as well as t57* both testing the clone command. t/README claims the
second digit is to indicate the command, which is inconsistent to the
current naming structure.
Rename all t57* tests to be in t56* to follow the pattern of the digits
as laid out in t/README.
It would have been less work to rename t56* => t57* because there are less
files, but the tests in t56* look more basic and I assumed the higher the
last digits the more complicated niche details are tested, so with the patch
now it looks more in order to me.
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This enables the multiple-variant support for real. Multiple
conflicts of the same shape can have differences in contexts where
they appear, interfering the replaying of recorded resolution of one
conflict to another, and in such a case, their resolutions are
recorded as different variants under the same conflict ID.
We still need to adjust garbage collection codepaths for this
change, but the basic "replay" functionality is functional with
this change.
t4200: rerere a merge with two identical conflicts
When the context of multiple identical conflicts are different, two
seemingly the same conflict resolution cannot be safely applied.
In such a case, at least we should be able to record these two
resolutions separately in the rerere database, and reuse them when
we see the same conflict later.
The shape of the conflict in a path determines the conflict ID. The
preimage and postimage pair that was recorded for the conflict ID
previously may or may not replay well for the conflict we just saw.
Currently, we punt when the previous resolution does not cleanly
replay, but ideally we should then be able to record the currently
conflicted path by assigning a new 'variant', and then record the
resolution the user is going to make.
Introduce a mechanism to have more than one variant for a given
conflict ID; we do not actually assign any variant other than 0th
variant yet at this step.
We record the preimage only when there is no directory to record the
conflict we encountered, i.e. when $GIT_DIR/rr-cache/$ID does not
exist. As the plan is to allow multiple <preimage,postimage> pairs
as variants for the same conflict ID eventually, this logic needs to
go.
As the first step in that direction, stop the "did we create the
directory? Then we record the preimage" logic. Instead, we record
if a preimage does not exist when we saw a conflict in a path. Also
make sure that we remove a stale postimage, which most likely is
totally unrelated to the resolution of this new conflict, when we
create a new preimage under $ID when $GIT_DIR/rr-cache/$ID already
exists.
In later patches, we will further update this logic to be "do we
have <preimage,postimage> pair that cleanly resolve the current
conflicts? If not, record a new preimage as a new variant", but
that does not happen at this stage yet.
rerere: handle leftover rr-cache/$ID directory and postimage files
If by some accident there is only $GIT_DIR/rr-cache/$ID directory
existed, we wouldn't have recorded a preimage for a conflict that
is newly encountered, which would mean after a manual resolution,
we wouldn't have recorded it by storing the postimage, because the
logic used to be "if there is no rr-cache/$ID directory, then we are
the first so record the preimage". Instead, record preimage if we
do not have one.
In addition, if there is only $GIT_DIR/rr-cache/$ID/postimage
without corresponding preimage, we would have tried to call into
merge() and punted.
These would have been a situation frustratingly hard to recover
from.
git-p4: map a P4 user to Git author name and email address
Map a P4 user to a specific name and email address in Git with the
"git-p4.mapUser" config. The config value must be a string adhering
to the format "p4user = First Lastname <email@address.com>".
Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Reviewed-by: Luke Diamand <luke@diamand.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Error messages should attempt to fit within the confines of
an 80-column terminal to avoid compatibility and accessibility
problems. Furthermore the word "directories" can be misleading
when used in the context of git refnames.
Expand the area of globs applicability for branches and tags
in git-svn. It is now possible to use globs like 'a*e', or 'release_*'.
This allows users to avoid long lines in config like: